: The official M22 product page allows you to purchase the PDF or a print version.
The laboratory performs a visual inspection of the shipment (checking for cracks, hemolysis, freezing, or contamination).
An additional 27 media types were categorized as "exempt," meaning they do not require routine retesting by the user if purchased from a verified manufacturer. clsi m22a3 pdf link
The third edition brought significant modifications compared to the previous M22-A2 version:
The most reliable place to purchase the standard is directly from the CLSI website (clsi.org). : The official M22 product page allows you
For larger hospital systems or reference laboratories, purchasing individual PDFs can become expensive. CLSI offers an online subscription platform called . This service grants your entire laboratory team access to a searchable digital library containing M22-A3 alongside all other critical microbiology and quality management standards. 3. Institutional Library Access
If you need to update your lab's standard operating procedures (SOPs) or prepare for an upcoming inspection, let me know: This service grants your entire laboratory team access
: Provides access to the M22-A3 (R2018) edition , though it notes certain regional purchase restrictions. What is CLSI M22-A3?
Media that is highly selective, complex, or prone to degradation, requiring mandatory user-level verification. Key Core Components of the Standard 1. Re-testing Exemptions (The "Exempt" List)
: Ensuring proper storage temperatures and monitoring expiration dates.